Previously available only to Apple’s registered developers and and later on to some select users, Apple has today decided to open iWork for iCloud web apps to everyone ahead of its September 10 keynote. That’s right, you can now log in to the web interface at iCloud.com using your existing Apple ID, regardless of whether you are a developer or a regular user.

The service provides Apple’s suite of iWork apps – Pages, Keynote and Numbers – that run in any standard web browser such as Apple’s Safari, Google’s Chrome and Microsoft’s Internet Explorer and support editing functionality…

Note that Pages, Keynote and Numbers web apps are labeled as beta so don’t be surprised you notice a few hiccups. In addition to Pages, Keynote and Numbers, Apple of course offers other web-based applications via the iCloud interface, including Mail, Contacts, Calendar, Notes, Reminders and Find My iPhone, which was yesterday updated on the iOS side.

It’s unknown whether iWork web apps will require a subscription fee. iWork apps are currently sold for $19.99 each on the Mac App Store and $9.99 each on the App Store, though we heard whispers that both iWork and iLife suits will go free come this Fall to giving users one less reason to consider rival platforms.